Delta enteliZONE eZNT-Wi Series Application Manual page 13

The eZNT-Wi uses a different CO2 sensor from the eZNT/eZNTW. The new CO2
sensor requires a new backplate allowing flush wall mount. The eZNT-Wi no longer
requires a different backplate for a unit with a CO2 sensor.
The CO2 eZNT-Wi backplate is not compatible with either the SM backplate (used on
non-CO2 eZNT/eZNTW/eZNT-Wi models) or the CO2 SC eZNT/eZNTW SC
backplate. With the surface CO2 backplate, the eZNTW is compatible with the eZNT.
However, neither the eZNTW nor the eZNT is compatible with the eZNS CO2
backplate.
eZNT-Wi Programmable Wi-Fi Thermostat Application Guide
Edition 1.4
Page 13 of 126